Display apparatus

ABSTRACT

A display apparatus includes a wireless transmission unit and a display panel. The display panel includes a substrate, a plurality of pixel units and a signal line. The substrate includes a display region and a periphery region. The periphery region surrounds the display region. The pixel units are disposed on the display region. Each of the pixel units includes an active device and a pixel electrode. The active device is electrically connected to the pixel electrode. The signal line is on the periphery region. As viewed from a top view, the signal line has an annular shape having a gap and surrounds the display region.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to U.S. Provisional Application Ser.No. 62/867,903 filed Jun. 28, 2019, the disclosures of which areincorporated herein by reference in their entireties.

BACKGROUND Field of Invention

The present invention relates to a display apparatus. More particularly,the present invention relates to a display apparatus including awireless transmitting unit.

Description of Related Art

With the progress of technology, the development of wireless technologyis gradually mature. The wireless technology includes near-fieldcommunication technology, which allows the two electronic apparatuses tocommunicate at close distance. However, in a product of the displayapparatus equipped with the near-field communication technology, thecircuits of the display apparatus may limit the signal transmission ofan antenna of the near-field communication. Therefore, how to ensure thetransmission efficiency of the antenna is an urgent problem to be solvedin the art.

SUMMARY

The present disclosure provides a display apparatus which can preventinterference with the transmission of the wireless transmitting unit.

The present disclosure provides a display apparatus including a wirelesstransmitting unit and a display panel. The display panel includes asubstrate, a plurality of pixel units and a signal line. The substrateincludes a display region and a periphery region. The periphery regionsurrounds the display region. The pixel units are disposed on thedisplay region. Each of the pixel units includes an active device and apixel electrode. The active device is electrically connected to thepixel electrode. The signal line is on the periphery region. As viewedfrom a top view, the signal line has an annular shape with a gap andsurrounds the display region.

In one embodiment of the present disclosure, the display apparatusfurther includes a driving chip. The driving chip transmits a commonelectric potential signal to the signal line.

In one embodiment of the present disclosure, the display region has afirst side and a second side opposite the first side. The signal linehas a first end and a second end separated with each other. A horizontaldistance between the first end and the first side is substantially equalto a horizontal distance between the second end and the second side.

In one embodiment of the present disclosure, the display region has athird side and a fourth side opposite the third side. The third side andthe fourth side are between the first side and the second side. Thesignal line surrounds the first side, the second side, the third sideand a portion of the fourth side.

In one embodiment of the present disclosure, the signal line is linesymmetrical with respect to a center line of the display region.

In one embodiment of the present disclosure, the display apparatusfurther includes an electrostatic discharge (ESD) protective circuit.The ESD circuit is on the periphery region. The ESD protective circuitsurrounds the display region.

In one embodiment of the present disclosure, as viewed from a top view,the ESD protective circuit has an annular shape with a gap and surroundsthe display region.

In one embodiment of the present disclosure, the signal line has acommon electric potential (Vcom).

In one embodiment of the present disclosure, the display apparatusfurther includes a circuit device. The circuit device is outside thedisplay region. The signal line is connected to the circuit device.

In one embodiment of the present disclosure, the signal line has a firstend and a second end separated with each other. The signal line cascadesthe circuit device through the first end and the second end.

Based on above, the signal line of the display apparatus of the presentdisclosure is on the periphery region. As viewed from a top view, thesignal line has an annular shape with a gap and surrounds the displayregion. Therefore, the signal line can be avoided from being a loop andinterfere the transmission of the wireless transmitting unit, so thatthe transmission performance of the wireless transmitting unit isimproved.

It is to be understood that both the foregoing general description andthe following detailed description are by examples, and are intended toprovide further explanation of the invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention can be more fully understood by reading the followingdetailed description of the embodiment, with reference made to theaccompanying drawings as follows:

FIG. 1A is a top view of a display apparatus according to one embodimentof the present embodiment.

FIG. 1B is a top view of a display apparatus according to anotherembodiment of the present embodiment.

FIG. 1C is a top view of a display apparatus according to anotherembodiment of the present embodiment.

FIG. 1D is a top view of a display apparatus according to anotherembodiment of the present embodiment.

FIG. 2 is a top view of a display apparatus according to anotherembodiment of the present embodiment.

FIG. 3 is a top view of a display apparatus according to anotherembodiment of the present embodiment.

FIG. 4 is a top view of a display apparatus according to anotherembodiment of the present embodiment.

FIG. 5 is a top view of a display apparatus according to anotherembodiment of the present embodiment.

DETAILED DESCRIPTION

Reference will now be made in detail to the present embodiments of theinvention, examples of which are illustrated in the accompanyingdrawings. Wherever possible, the same reference numbers are used in thedrawings and the description to refer to the same or like parts.

FIG. 1A is a top view of a display apparatus 10 according to oneembodiment of the present embodiment. Referring to FIG. 1A, the displayapparatus 10 includes a display panel 100 and a wireless transmissionunit 103. The wireless transmission unit 103 may be, but is not limitedto, a wireless fidelity (Wi-Fi) module, a radio frequency identification(RFID) module, a bluetooth module, an infrared ray module, near-fieldcommunication (NFC) module or a device-to device (D2D) module. In someembodiments where the wireless transmission unit 103 is an NFC module,the wireless transmission unit 103 has an antenna structure.

The display apparatus 10 further includes a circuit board 102. Thedisplay panel 100 is on one side of the circuit board 102 and isconnected to the circuit board 102. In the present embodiment, thewireless transmission unit 103 is disposed on, but is not limited to,the circuit board 102. In some other embodiments, the wirelesstransmission unit 103 may be disposed on the display panel 100.

The display panel 100 includes a substrate 104, a plurality of pixelunits PX and a signal line 106. The substrate 104 includes a displayregion AA and a periphery region NA. The periphery region NA surroundsthe display region AA. The pixel units PX are disposed on the displayregion AA. Each of the pixel units PX includes an active device T and apixel electrode PE. The active device T is electrically connected to thepixel electrode PE.

The display panel 100 further includes data lines DL and scan lines SLdisposed on the display region AA. In the present embodiment, the datalines DL intersect with the scan lines SL. For example, the data linesDL extend along a first direction D1 and the scan lines SL extend alonga second direction D2. The present disclosure, however, is not limitedthereto. In the present embodiment, the pixel units PX are arranged inan array. The active device T is, for example, a thin film transistorand has a source SE, a drain DE and a gate GE. The source SE of theactive device T is electrically connected to the corresponding data lineDL. The gate GE of the active device T is electrically connected to thescan line SL. The drain DE of the active device T is electricallyconnected to the corresponding pixel electrode PE. The display apparatus10 further includes a driving chip 108 disposed on the periphery regionNA. The pixel units PX are electrically connected to the driving chip108 through the data lines DL. In the present embodiments, the drivingchip 108 is, for example, a source driving chip.

In the present embodiment, considering the conductivity, materials ofthe gate GE, the source SE and the drain DE of the active device T, thedata lines DL and the scan lines SL are generally, but is not limitedto, a metal material. In some other embodiments, the gate GE, the sourceSE and the drain DE of the active device T, the data lines DL, and thescan lines SL may be other conductive materials such as alloys, metalnitrides, metal oxides, metal oxynitrides, other suitable materials, ora stacked layer of a metal material and other conductive materials. Thematerial of the substrate 104 may include glass, quartz, polymermaterial (e.g., polyimide, benzocyclobutene, polycarbonate or othersuitable materials), other suitable materials, or a combination of atleast two thereof.

In the present embodiment, the pixel electrode PE may optionally be atransparent electrode. The material of the transparent electrodeincludes metal oxides such as indium tin oxide (ITO), indium zinc oxide(IZO), aluminum tin oxide, aluminum zinc oxide, other suitable oxides,or a stacked layer of at least two thereof. The present disclosure,however, is not limited thereto. In other embodiments, the pixelelectrode PE may be a reflective electrode or a combination of thereflective electrode and a transparent electrode.

In the present embodiment, the display panel 100 can optionally includea driving circuit 110. The driving circuit 110 is disposed on theperiphery region NA and electrically connected to at least a portion ofthe scan lines SL. For example, the driving circuit 110 may be a gatedriver on array (GOA). That is, active devices (not shown) of thedriving circuit 110 and the active device T of the pixel unit PX areformed in the same process, but the present disclosure is not limitedthereto.

The signal line 106 is disposed on the periphery region NA. The signalline 106 has a predetermined electric potential. For example, the signalline 106 has a common electric potential (Vcom) or may have a floatingelectric potential, a constant electric potential, a ground electricpotential or an adjustable electric potential. An electric potentialdifference between a display driving electric potential of each pixelelectrode PE and the common electric potential (Vcom) can be applied ona display medium (not shown, for example, a liquid crystal molecule, anelectrophoresis display medium or other suitable medium) of the displayapparatus 10 such that each pixel unit PX has a corresponding brightnessand can display image. The signal line 106 surrounds the display regionAA. For example, the display region AA has a first side a1 and a secondside a2 opposite the first side a1. For example, the first side a1 andthe second side a2 are substantially parallel to the first direction D1.The display region AA further has a third side a3 and a fourth side a4opposite the third side a3. The third side a3 is substantially parallelto the second direction D2. The signal line 106 surrounds at least threeof the first side a1, the second side a2, the third side a3 and thefourth side a4. Therefore, a uniformity of the display image of thedisplay region AA can be improved and an electrostatic discharge isprevented.

In the present embodiment, the signal line 106 further has an openingO1. In other words, a portion of the signal line 106 is disconnected.For example, a normal projection of the signal line 106 on the substrate104 has a C-shaped contour. In other words, as viewed from a top view,the signal line 106 has an annular shape having a gap and surrounds thefirst side a1, the second side a2, the third side a3 and a portion ofthe fourth side a4. In the present embodiment, the opening O1 is at, forexample, the fourth side a4. In other words, the signal line 106 isdiscontinuous at the fourth side a4 of the display region AA. The signalline 106 has a first end 106A and a second end 106B opposite the firstend 106A. The first end 106A and the second end 106B are separated witheach other. In particular, the first end 106A and the second end 106Bare physically separated. The display panel 100 further includes acenter line CL passing through a center of the display region AA. Forexample, the first end 106A and the second end 106B of the signal line106 are point symmetrical with respect to the center line CL of thedisplay region AA. Therefore, the signal line 106 can be avoided frombeing a loop and interfere the transmission of the wireless transmissionunit 103, so that the transmission performance of the wirelesstransmission unit 103 is improved. In some embodiments where thewireless transmission unit 103 is a near-field communication module, thetransmission performance of the near-field communication can beimproved. The signal line 106 is made of metal wire, thereby reducingthe interference of the signal line 106 to the wireless transmissionunit 103. In other embodiments, the signal line 106 has a gridstructure. Therefore, the interference of the signal line 106 to thewireless transmission unit 103 is reduced.

In some other embodiments, the signal line 106 may be asymmetrical withrespect to the center line CL of the display region AA. For example, theopening O1 is at the second side a2 (see FIG. 1B). That is to say, thesignal line 106 is discontinuous at the second side a2 of the displayregion AA. In other words, the first end 106A and the second end 106Bare at the second side a2. In some other embodiments, the opening O1 isat the third side a3 (see FIG. 1C). That is, the signal line 106 isdiscontinuous at the third side a3 of the display region AA. In otherwords, the first end 106A and the second end 106B are at the third sidea3. In some other embodiments, the opening O1 can be at the fourth sidea4 (see FIG. 1D) and the opening O1 and the driving chip 108 are at thesame side of the display region AA. That is, the signal line 106 isdiscontinuous at the fourth side a4 of the display region AA. In otherwords, the first end 106A and the second end 1066 are at the fourth sidea4.

The signal line 106 is line symmetrical with respect to the center lineCL of the display region AA. For example, a horizontal distance L1between the first end 106A and the first side a1 of the signal line 106is substantially equal to a horizontal distance L2 between the secondend 106B and the second side a2 of the signal line 106. In other words,a distance along the second direction D2 between the first end 106A andthe first side a1 of the signal line 106 is substantially equal to adistance along the second direction D2 between the second end 106B andthe second side a2 of the signal line 106. A horizontal distance L3(e.g. a distance along the second direction D2) between the first end106A of the signal line 106 and the center line CL is substantiallyequal to a horizontal distance L4 (e.g. a distance along the seconddirection D2) between the second end 106B of the signal line 106 and thecenter line CL. Therefore, uniformity of the display image of thedisplay region AA can be improved.

The signal line 106 is electrically connected to the driving chip 108through a plurality of traces 116. The driving chip 108 transmits thecommon electric potential (Vcom) signal to the signal line 106 throughthe traces 116. In the present embodiment, the display panel 100 furtherincludes a flexible printed circuit (FPC) board 112. The common electricpotential (Vcom) signal can be provided by a chip (not shown) on the FPCboard 112. The FPC board 112 is disposed on the periphery region NA andis between the first side a1 and the second side a2. The FPC board 112is between the circuit board 102 and the display panel 100. The signalline 106 is electrically connected to the circuit board 102 through, forexample, the chip (not shown) on the FPC board 112.

FIG. 2 is a top view of a display apparatus 10 a according to anotherembodiment of the present disclosure. The main difference between thedisplay apparatus 10 a of FIG. 2 and the display apparatus 10 of FIG. 1Ais that in the display apparatus 10 a of the present embodiment, thedisplay panel 100 further includes an electrostatic discharge (ESD)protective circuit 114. The ESD protective circuit 114 is on theperiphery region NA. The ESD protective circuit 114 surrounds thedisplay region AA and can protect other electrical devices from beingdamaged by an electrostatic discharge effect. In the present embodiment,the ESD protective circuit 114 further has an opening O2. In otherwords, a portion of the ESD protective circuit 114 is disconnected. Forexample, a normal projection of the ESD protective circuit 114 on thesubstrate 104 has a C-shaped contour. As viewed from a top view, the ESDprotective circuit 114 has an annular shape having a gap and surroundsthe first side a1, the second side a2, the third side a3 and a portionof the fourth side a4. In the present embodiment, the opening O2 is at,for example, the fourth side a4. The ESD protective circuit 114 has athird end 114A and a fourth end 114B opposite the third end 114A. Thethird end 114A and the fourth end 114B are separated with each other. Inparticular, the third end 114A and the fourth end 114B are physicallyseparated. Therefore, the ESD protective circuit 114 can be avoided frombeing a loop and interfere the transmission of the wireless transmissionunit 103, so that the transmission performance of the wirelesstransmission unit 103 is improved. In some embodiments where thewireless transmission unit 103 is a near-field communication module, thetransmission performance of the near-field communication can beimproved.

FIG. 3 is a top view of a display apparatus 10 b according to anotherembodiment of the present embodiment. The main difference between thedisplay apparatus 10 b of FIG. 3 and the display apparatus 10 of FIG. 1Ais that in the display apparatus 10 b of the present embodiment, thefirst end 106A and the second end 106B of the signal line 106 b areconnected to and in contact with two ends of the driving chip 108,respectively. But in an internal design of the driving chip 108, thefirst end 106A and the second end 106B are disconnected. That is, anopening (not shown) is formed inside the driving chip 108 and the firstend 106A and the second end 106B have the same electric potential. Thecircuit board 102 and the FPC board 112 are outside a loop structureformed by the signal line 106 b and the driving chip 108. In the presentembodiment, the driving chip 108 transmits a first signal to the firstend 106A and transmits a second signal to the second end 106B. The firstsignal and the second signal have the same predetermined electricpotential. Since the first signal and the second signal are not loopcircuit, the signal line 106 b do not interfere with the transmission ofthe wireless transmission unit 103, so that the transmission performanceof the wireless transmission unit 103 is improved. For the convenienceof description, the ESD protective circuit 114 is omitted in FIG. 3.

FIG. 4 is a top view of a display apparatus 10 c according to anotherembodiment of the present embodiment. The main difference between thedisplay apparatus 10 c of FIG. 4 and the display apparatus 10 of FIG. 1Ais that in the display apparatus 10 c of the present embodiment, thefirst end 106A and the second end 106B of the signal line 106 c are onthe FPC board 112 and electrically connected to and in contact with theFPC board 112. Therefore, the signal line 106 c forms a loop structurewith and cascades the FPC board 112. But in an internal design of theFPC board 112, the first end 106A and the second end 106B aredisconnected. That is, an opening (not shown) is formed in the FPC board112 and the first end 106A and the second end 106B have the sameelectric potential. In the present embodiment, the FPC board 112transmits a first signal to the first end 106A and transmits a secondsignal to the second end 106B. Since the first signal and the secondsignal are not loop circuit, the signal line 106 c do not interfere withthe transmission of the wireless transmission unit 103, so that thetransmission performance of the wireless transmission unit 103 isimproved. For the convenience of description, the driving circuit 110and the ESD protective circuit 114 are omitted in FIG. 4.

FIG. 5 is a top view of a display apparatus 10 d according to anotherembodiment of the present embodiment. The main difference between thedisplay apparatus 10 d of FIG. 5 and the display apparatus 10 of FIG. 1Ais that in the display apparatus 10 d of the present embodiment, thesignal line 106 d overlaps the FPC board 112 and extends to be incontact with the circuit board 102. For example, the first end 106A andthe second end 106B are on the circuit board 102 and electricallyconnected to and in contact with the circuit board 102. Therefore, thesignal line 106 d forms a loop structure with and cascades the circuitboard 102. But in an internal design of the circuit board 102, the firstend 106A and the second end 106B are disconnected. That is, an opening(not shown) is formed in the circuit board 102 and the first end 106Aand the second end 106B have the same electric potential. In the presentembodiment, the circuit board 102 transmits a first signal to the firstend 106A and transmits a second signal to the second end 106B. Since thefirst signal and the second signal are not loop circuit, the signal line106 d do not interfere with the transmission of the wirelesstransmission unit 103, so that the transmission performance of thewireless transmission unit 103 is improved. For the convenience ofdescription, the driving circuit 110 and the ESD protective circuit 114is omitted in FIG. 5.

Based on above, a normal projection of the signal line of the displayapparatus of the present disclosure on the substrate has a C-shapedcontour. In other words, the signal line surrounds the first side, thesecond side, the third side and a portion of the fourth side of thedisplay region. The signal line has a first end and a second endopposite the first end. The first end and the second end are separatedwith each other. Therefore, the signal line can be avoided from being aloop and interfere with the transmission of the wireless transmissionunit, so that the transmission performance of the wireless transmissionunit is improved. For example, in some embodiments where the wirelesstransmission unit is a near-field communication module, the transmissionperformance of the near-field communication can be improved.

Although the present invention has been described in considerable detailwith reference to certain embodiments thereof, other embodiments arepossible. Therefore, the spirit and scope of the appended claims shouldnot be limited to the description of the embodiments contained herein.

It will be apparent to those skilled in the art that variousmodifications and variations can be made to the structure of the presentinvention without departing from the scope or spirit of the invention.In view of the foregoing, it is intended that the present inventioncover modifications and variations of this invention provided they fallwithin the scope of the following claims.

What is claimed is:
 1. A display apparatus, comprising: a wirelesstransmission unit; and a display panel, wherein the display panelcomprises: a substrate comprising a display region and a peripheryregion, wherein the periphery region surrounds the display region; aplurality of pixel units disposed on the display region, wherein each ofthe pixel units comprises an active device and a pixel electrode, andthe active device is electrically connected to the pixel electrode; anda signal line on the periphery region, wherein as viewed from a topview, the signal line has an annular shape with a gap and surrounds thedisplay region.
 2. The display apparatus of claim 1, further comprising:a driving chip, wherein the driving chip transmits a common electricpotential signal to the signal line.
 3. The display apparatus of claim1, wherein the display region has a first side and a second sideopposite the first side, the signal line has a first end and a secondend separated with each other, and a horizontal distance between thefirst end and the first side is substantially equal to a horizontaldistance between the second end and the second side.
 4. The displayapparatus of claim 3, wherein the display region has a third side and afourth side opposite the third side, the third side and the fourth sideare between the first side and the second side, and the signal linesurrounds the first side, the second side, the third side and a portionof the fourth side.
 5. The display apparatus of claim 1, wherein thesignal line is line symmetrical with respect to a center line of thedisplay region.
 6. The display apparatus of claim 1, further comprising:an electrostatic discharge (ESD) protective circuit on the peripheryregion, wherein the ESD protective circuit surrounds the display region.7. The display apparatus of claim 6, wherein as viewed from a top view,the ESD protective circuit has an annular shape with a gap and surroundsthe display region.
 8. The display apparatus of claim 1, wherein thesignal line has a common electric potential (Vcom).
 9. The displayapparatus of claim 1, further comprising: a circuit device outside thedisplay region, wherein the signal line is connected to the circuitdevice.
 10. The display apparatus of claim 9, wherein the signal linehas a first end and a second end separated with each other, and thesignal line cascades the circuit device through the first end and thesecond end.